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BITSAT Chemistry Some Basic Concepts of Chemistry 2022 BITSAT 2022

BITSAT Chemistry Question (2022) — Solution

Question

A certain metal sulphide, M S_2, is used extensively as a high temperature lubricant. If MS _2 is 40.06 \% by mass sulphur, metal M has atomic mass.

Options

  1. A. 160 u
  2. B. 64 u
  3. C. 40 u
  4. D. 96 u

Answer

D. 96 u

Step-by-step solution

M S_2=M+32 2=M+64 \% of sulphur = ( 64 M+64 ) 100=40.06 M+64= 6400 40.06 M+64=160 M=160-64=96 u

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